0.6.x/js/07_audio/02_XHTMLAudio.js

   1 \r
   2 /*\r
   3  * original : uupaa-js HTML5Audio.js\r
   4  * https://code.google.com/p/uupaa-js/source/browse/trunk/0.8/src/Audio/HTML5Audio.js?r=568\r
   5  */\r
   6 \r
   7 var X_Audio_HTMLAudio_playTrigger =\r
   8                 6 <= X_UA[ 'iOS' ] ? 'loadeddata' :\r
   9                 X_UA[ 'iOS' ] < 5  ? 'stalled' :\r
  10                 X_UA[ 'iOS' ]      ? 'suspend' :\r
  11                 X_UA[ 'AndroidBrowser2' ] ? 'stalled' : // Android 2.3.5(SBM101SH) では stalled は発生しない,,,\r
  12                 X_UA[ 'AndroidBrowser4' ] ? 'loadeddata' : \r
  13                 X_UA[ 'OperaMobile' ] || X_UA[ 'OperaTablet' ] ? 'loadeddata' : 'canplay',\r
  14         X_Audio_HTMLAudioWrapper,\r
  15         X_Audio_constructor = window[ 'Audio' ] || window.HTMLAudioElement,\r
  16         X_Audio_rawAudio,\r
  17         // Opera Mobile 12 android4.4.4 & 2.3.5 は 2回目以降の currentTime へのセットで currentTime が更新されなくなるため、タイマーを使用する\r
  18         X_Audio_HTMLAudioWrapper_currentTimeFix  = !!X_UA[ 'OperaMobile' ] || !!X_UA[ 'OperaTablet' ], // || ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ),\r
  19         // Android1.6+MobileOpera12では無理っぽい、、、\r
  20         X_Audio_HTMLAudioWrapper_badOperaAndroid = X_Audio_HTMLAudioWrapper_currentTimeFix && X_UA[ 'Android' ] < 2,\r
  21 \r
  22         // 一方 Desktop の Opera12 は、loadeddata 等では duration が infinity で、再生後の durationchange 時に duration が判明する。\r
  23         // opera12 volume, mute の変更が2度目以降できない\r
  24         // duration 判明後には currentTime によるシークと、現在時間の取得が可能になる。\r
  25         // canplay で play() durationchange で duration が取れたら loadedmetadata->loadeddata -> canplay する\r
  26         // boombox.js に書いてあった currentTime の効かないブラウザってこいつのことみたい、、、\r
  27         // Opera12.17 Win32(XP) portable apps は勝手に再生が始まる、、、その際には timeupdate が発行されない、、、　iframe+image+audio で使わないときは破棄する、とか。\r
  28         // opera11、10.54 WinXP はまとも、、、\r
  29         // X_Audio_Sprite_handleEvent でも使用\r
  30         X_Audio_HTMLAudioWrapper_ieMobile9Fix    = ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ),\r
  31         X_Audio_HTMLAudioWrapper_durationFix     = ( !X_Audio_HTMLAudioWrapper_currentTimeFix && 12 <= X_UA[ 'Opera' ] ),\r
  32         \r
  33         X_Audio_HTMLAudioWrapper_shortPlayFix    = X_UA[ 'AndroidBrowser2' ],\r
  34         \r
  35         X_Audio_codecs;\r
  36 \r
  37 if( X_Audio_constructor && !X_Audio_HTMLAudioWrapper_badOperaAndroid ){\r
  38         //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
  39         //引数なしで new Audio() とすると、Operaでエラーになるそうなので注意。\r
  40         X_Audio_rawAudio = new X_Audio_constructor( '' );\r
  41 \r
  42         if( X_Audio_rawAudio.canPlayType ){\r
  43                 X_Audio_codecs = {\r
  44               'mp3'  : X_Audio_rawAudio.canPlayType('audio/mpeg'),\r
  45               'opus' : X_Audio_rawAudio.canPlayType('audio/ogg; codecs="opus"'),\r
  46               'ogg'  : X_Audio_rawAudio.canPlayType('audio/ogg; codecs="vorbis"'),\r
  47               'wav'  : X_Audio_rawAudio.canPlayType('audio/wav; codecs="1"'),\r
  48               'aac'  : X_Audio_rawAudio.canPlayType('audio/aac'),\r
  49               'm4a'  : X_Audio_rawAudio.canPlayType('audio/x-m4a') + X_Audio_rawAudio.canPlayType('audio/m4a') + X_Audio_rawAudio.canPlayType('audio/aac'),\r
  50               'mp4'  : X_Audio_rawAudio.canPlayType('audio/x-mp4') + X_Audio_rawAudio.canPlayType('audio/mp4') + X_Audio_rawAudio.canPlayType('audio/aac'),\r
  51               'weba' : X_Audio_rawAudio.canPlayType('audio/webm; codecs="vorbis"')\r
  52                 };\r
  53                 (function( k, v ){\r
  54                         for( k in X_Audio_codecs ){\r
  55                                 if( X_EMPTY_OBJECT[ k ] ) continue;\r
  56                                 v = X_Audio_codecs[ k ];\r
  57                                 X_Audio_codecs[ k ] = v && v.split( 'no' ).join( '' );\r
  58                                 console.log( k + ' ' + X_Audio_codecs[ k ] );\r
  59                         };\r
  60                 })();\r
  61         } else {\r
  62                 // iOS3.2.3\r
  63                 X_Audio_codecs = {\r
  64               'mp3'  : X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  ),\r
  65               'ogg'  : 5 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ,\r
  66               'wav'  : X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  ),\r
  67               'aac'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  68               'm4a'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  69               'mp4'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  70               'weba' : 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] // firefox4+(Gecko2+)\r
  71                 };\r
  72         };\r
  73         \r
  74         X_Audio_HTMLAudioWrapper = X_EventDispatcher[ 'inherits' ](\r
  75                 'X.AV.HTML5AudioWrapper',\r
  76                 X_Class.POOL_OBJECT,\r
  77                 {\r
  78                         \r
  79                         proxy           : null,\r
  80                         \r
  81                         startTime       : 0,\r
  82                         endTime         : -1,\r
  83                         loopStartTime   : -1,\r
  84                         loopEndTime     : -1,\r
  85                         seekTime        : -1,\r
  86                         duration        : 0,\r
  87                         \r
  88                         playing         : false,\r
  89                         error           : 0,                    \r
  90                         loop            : false,\r
  91                         looped          : false,\r
  92                         autoplay        : false,\r
  93                         volume          : 0.5,\r
  94 \r
  95                         _playTime        : 0,\r
  96                         _closed          : true,\r
  97                         _loaded          : false,\r
  98                         _beginTime       : 0,\r
  99                         _playForDuration : 0,\r
 100                         _lastCurrentTime : 0,\r
 101                         _src             : '',\r
 102                         \r
 103                         Constructor : function( proxy, source, option ){\r
 104                                 var raw;\r
 105                                 \r
 106                                 this.proxy   = proxy;\r
 107                                 this._closed = false;\r
 108                                 \r
 109                                 X_AudioWrapper_updateStates( this, option );\r
 110 \r
 111                                 if( option[ 'useVideo' ] ){\r
 112                                         this[ '_rawObject' ] = raw = document.createElement( 'video' );\r
 113                         raw.preload           = 'none'; // auto, metadata, none\r
 114                         //raw.autoplay = false, // no-auto\r
 115                         raw.loop     = false;\r
 116                         raw.muted    = false;\r
 117                         //raw.crossorigin       = option[ 'crossorigin' ] || ''; //crossorigin: "anonymous", X.URL.isSameDomain() で切り替え\r
 118                         raw.style.cssText     = 'position:absolute;bottom:0;left:-50px;width:100px;height:100px;opacity:0;';\r
 119                                         raw.controls          = false;\r
 120                                         raw.WebKitPlaysInline = true;\r
 121                                         raw.src               = source;\r
 122                                         //raw.onclick  = "alert('play');this.play();";\r
 123                                         document.body.appendChild( raw );\r
 124                                         //raw.load();\r
 125                                 } else {\r
 126                                         this[ '_rawObject' ] = X_Audio_rawAudio || new X_Audio_constructor( source );\r
 127                                         // X_Doc_create( 'audio', { src : source } )[ 'appendTo' ]( X.Doc.body );\r
 128                                         this[ '_rawObject' ].autobuffer = false;\r
 129                                         this._src = source;\r
 130                                 };\r
 131                                 \r
 132                                 this[ 'listen' ]( [\r
 133                                                 'loadstart', 'load', 'progress', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'play', 'pause', 'loadedmetadata',\r
 134                                                 'loadeddata', 'waiting', 'playing', 'canplay', 'canplaythrough', 'seeking', 'seeked', 'timeupdate', 'ended',\r
 135                                                 'ratechange', 'durationchange', 'volumechange' ], this.handleEventProxy );                              \r
 136 \r
 137                                 //document.body.appendChild( this[ '_rawObject' ] );\r
 138                                 this[ '_rawObject' ].autoplay = false;\r
 139 \r
 140                                 if( X_Audio_rawAudio === this[ '_rawObject' ] ){\r
 141                                         if( X_Audio_HTMLAudioWrapper_badOperaAndroid ){\r
 142                                                 X_Audio_HTMLAudioWrapper_badOperaAndroid && alert( 12 );\r
 143                                                 X_EventDispatcher_toggleAllEvents( this, false );\r
 144                                                 this[ '_rawObject' ] = new X_Audio_constructor( X_URL_toAbsolutePath( source ) );\r
 145                                                 //X_EventDispatcher_toggleAllEvents( this, true );\r
 146                                         } else {\r
 147                                                 X_Audio_rawAudio.src = source;\r
 148                                         };\r
 149 \r
 150                                         //this[ '_rawObject' ] = new X_Audio_constructor( X_URL_toAbsolutePath( source ) );\r
 151                                         /*!X_Audio_Sprite_needTouchFirst && */ X_Audio_rawAudio.load(); // 要る?\r
 152                                         X_Audio_rawAudio = null;\r
 153                                 };\r
 154 \r
 155                                 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE );\r
 156                         },\r
 157                         \r
 158                         handleEvent : function( e ){\r
 159                                 switch( e.type ){\r
 160 \r
 161                                         case X_EVENT_KILL_INSTANCE :\r
 162                                                 break;\r
 163                                 };\r
 164                         },\r
 165                         /*\r
 166                          * http://uguisu.skr.jp/html/table3.html\r
 167                          */\r
 168                         handleEventProxy : function( e ){\r
 169                                 var type, loaded, end, now;\r
 170                                 \r
 171                                 X_Audio_HTMLAudioWrapper_badOperaAndroid && alert( e.type );\r
 172                                 \r
 173                                 console.log( e.type );\r
 174                                 \r
 175                                 switch( e.type ){\r
 176                                         case 'loadstart' :      //      ブラウザがコンテンツの検索を開始した場合に発生\r
 177                                                 break;\r
 178                                         case 'progress' :       //      ブラウザがコンテンツの取得を実行した場合に発生\r
 179                                                 console.log( e.loaded + ' ' + e.total * 100 + '%' );\r
 180                                                 // iem9 で常に0 this[ '_rawObject' ].networkState;\r
 181                                                 // opera Android 12 で　buffered.end() へのアクセスはエラー　try catch も無効、iem9 は常に end(0) = 0\r
 182                                                 //console.log( 'buffered.end ' + this[ '_rawObject' ].buffered && this[ '_rawObject' ].buffered.end(0) ); \r
 183                                                 break;\r
 184                                         \r
 185                                         case 'canplay' :        //      今すぐに再生を再開できるが、バッファリングが不十分でコンテンツを最後まで表示できないと予測している場合に発生\r
 186                                                 if( X_Audio_HTMLAudioWrapper_durationFix && this._playForDuration === 0 ){\r
 187                                                         //console.log( 'DurationFix開始 - ' + this[ '_rawObject' ].duration );\r
 188                                                         this._playForDuration = 1;\r
 189                                                         this[ '_rawObject' ].play();\r
 190                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000; // 必要！\r
 191                                                         return;\r
 192                                                 };\r
 193                                         case 'loadedmetadata' : //      ブラウザがメディアリソースの長さと寸法を判定した場合に発生\r
 194                                         case 'loadeddata' :     //      コンテンツの表示を現在の再生位置で初めて行えるようになった場合に発生\r
 195                                         case 'canplaythrough' : //      今すぐに再生を開始してもバッファリングで停止することなく最後まで表示できると予測している場合に発生\r
 196                                                 if( X_Audio_HTMLAudioWrapper_durationFix && this._playForDuration !== 2 ) return;\r
 197                                                 this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 198                                                 break;\r
 199         \r
 200                                         case 'stalled' :        //      ブラウザがコンテンツの取得を試みたが、データがまだ用意されていない場合に発生\r
 201                                                 // Android2 で ready 扱い?\r
 202                                         case 'suspend' :        //      ブラウザが意図的にコンテンツの取得を現在行っていない場合に発生（ダウンロードは未完了）\r
 203                                                 // iOS で ready 扱い\r
 204                                         case 'emptied' :        //      読み込み中に致命的なエラーが発生したか、実行状態ででload()メソッドが実行された場合に発生\r
 205                                         case 'abort' :          //      ダウンロードの完了前にコンテンツの取得を停止した場合に発生（この停止はエラーによるものではない）\r
 206                                                 break;\r
 207                                                 \r
 208                                         case 'error' :          //      コンテンツの取得実行中にエラーが発生した場合に発生\r
 209                                                 type = X_EVENT_ERROR;\r
 210                                                 break;\r
 211                                         \r
 212                                         case 'playing' :        //      再生が開始された場合に発生\r
 213                                                 if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 214                                                         this._playTime  = X_Timer_now();\r
 215                                                 };\r
 216                                                 type = X_EVENT_MEDIA_PLAYING;\r
 217                                         case 'play' :           //      再生が開始された。play()メソッドからの復帰後に発生する場合に発生\r
 218                                         case 'pause' :          //      再生が一時停止された。pauseメソッドからの復帰後に発生する場合に発生\r
 219                                         case 'seeked' :         //      シークがfalseに変化した場合に発生\r
 220                                         case 'ratechange' :     // defaultPlaybackRate属性とplaybackRate属性のどちらかが更新された場合に発生\r
 221                                         case 'volumechange' :   // volume属性とmuted属性のどちらかが変化した場合に発生\r
 222                                                 if( this._playForDuration === 1 ) return;\r
 223                                                 break;\r
 224                                                 \r
 225                                         case 'waiting' :        //      次のフレームが利用不可のため再生を停止したが、そのフレームがやがて利用可能になると想定している場合に発生\r
 226                                                 type = X_EVENT_MEDIA_WAITING;\r
 227                                         case 'seeking' :        //      シークがtrueに変化し、イベントを発生させるのに十分な時間がシーク操作にかかっている場合に発生\r
 228                                                 type = type || X_EVENT_MEDIA_SEEKING;\r
 229                                                 if( this._playForDuration === 1 ) return;\r
 230                                                 break;\r
 231                                                 \r
 232                                         case 'ended' :\r
 233                                                 if( !this._closed && this.loop ){\r
 234                                                         if( !( this.proxy[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_Callback_PREVENT_DEFAULT ) ){\r
 235                                                                 this.looped = true;\r
 236                                                                 this.proxy[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 237                                                                 this.play();\r
 238                                                         };\r
 239                                                         return;\r
 240                                                 };\r
 241                                                 type = X_EVENT_MEDIA_ENDED;\r
 242                                                 this.seekTime = 0;\r
 243                                                 delete this.playing;\r
 244                                                 break;\r
 245         \r
 246                                         case 'timeupdate' :     //      通常の再生が行われ現在の再生位置の変化が起こった場合に発生\r
 247                                                 if( X_Audio_HTMLAudioWrapper_ieMobile9Fix ){\r
 248                                                         if( this._playForDuration === 1 ){\r
 249                                                                 console.log( 'tu ' + this[ '_rawObject' ].duration );\r
 250                                                                 if( !this.duration && X_Type_isFinite( this[ '_rawObject' ].duration ) ){\r
 251                                                                         this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 252                                                                         this._playForDuration = 2;\r
 253                                                                         \r
 254                                                         //this.proxy[ 'asyncDispatch' ]( 'loadedmetadata' );\r
 255                                                         //this.proxy[ 'asyncDispatch' ]( 'loadeddata' );\r
 256                                                         //this.proxy[ 'asyncDispatch' ]( 'canplay' );\r
 257                                                         //this.proxy[ 'asyncDispatch' ]( 'canplaythrough' );\r
 258                                                         loaded = true;\r
 259                                                         //console.log( 'durationFix が完了' + this.duration );\r
 260                                                         break;\r
 261                                                                 } else {\r
 262                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000; // 必要！\r
 263                                                                         return;\r
 264                                                                 };\r
 265                                                         } else\r
 266                                                         if( this[ '_rawObject' ].currentTime === this._lastCurrentTime ){\r
 267                                                                 //this.proxy[ 'dispatch' ]( 'seeking' );\r
 268                                                                 this.proxy[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 269                                                                 return;\r
 270                                                         };\r
 271                                                         this._lastCurrentTime = this[ '_rawObject' ].currentTime;\r
 272                                                 };\r
 273                                                 this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 274 \r
 275                                     if( this.playing ){\r
 276                                         end = X_AudioWrapper_getEndTime( this );\r
 277                                         now = X_Audio_HTMLAudioWrapper_currentTimeFix ? X_Timer_now() - this._playTime + this._beginTime : this[ '_rawObject' ].currentTime * 1000 | 0;\r
 278                                         if( 0 + end <= 0 + now ){ // なぜか iem9 で必要,,,\r
 279                                                 if( this.loop ){\r
 280                                                         if( !( this.proxy[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_Callback_PREVENT_DEFAULT ) ){\r
 281                                                                 this.looped = true;\r
 282                                                                 this.proxy[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 283                                                                 this.play();\r
 284                                                         };\r
 285                                                 } else {\r
 286                                                         this.pause();\r
 287                                                         this.proxy[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 288                                                 };\r
 289                                                 return;\r
 290                                         };\r
 291                                     } else {\r
 292                                         return;\r
 293                                     };\r
 294                                     type = X_EVENT_MEDIA_PLAYING;\r
 295                                                 break;\r
 296                                                 \r
 297                                         case 'durationchange' : // duration属性が更新された場合に発生\r
 298                                                 \r
 299                                                 if( !X_Audio_HTMLAudioWrapper_durationFix ){\r
 300                                                         this.duration = this[ '_rawObject' ].duration * 1000;\r
 301                                                 } else\r
 302                                                 // Desktop Opera では Infinity, IEM9 では NaN\r
 303                                                 if( !this.duration && X_Type_isFinite( this[ '_rawObject' ].duration ) ){\r
 304                                                         \r
 305                                                         //console.log( this[ '_rawObject' ].duration );\r
 306                                                         \r
 307                                                         this.duration = this[ '_rawObject' ].duration * 1000;\r
 308                                                         \r
 309                                                         if( this._playForDuration === 0 ) this._playForDuration = 2;\r
 310                                                         \r
 311                                                         if( this._playForDuration === 1 ){\r
 312                                                                 this._playForDuration = 2;\r
 313                                                                 \r
 314                                                                 console.log( 'Loaded ' + this._loaded );\r
 315                                                                 \r
 316                                                                 if( this._loaded ){\r
 317                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000;\r
 318                                                                         console.log( '設定 ' + this._beginTime );\r
 319                                                                         return;\r
 320                                                                 };\r
 321                                                                 \r
 322                                                                 /*\r
 323                                                 this.proxy[ 'asyncDispatch' ]( 'loadedmetadata' );\r
 324                                                 this.proxy[ 'asyncDispatch' ]( 'loadeddata' );\r
 325                                                 this.proxy[ 'asyncDispatch' ]( 'canplay' );\r
 326                                                 this.proxy[ 'asyncDispatch' ]( 'canplaythrough' ); */\r
 327                                                \r
 328                                                 \r
 329                                                 loaded = true;\r
 330                                                 console.log( 'durationFix が完了' + this.duration );\r
 331                                                 \r
 332                                                 if( this.autoplay ){\r
 333                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000;      \r
 334                                                 } else {\r
 335                                                         // Opera12.17 WinXP で勝手に再生される不具合\r
 336                                                         // これで一応再生は止まる、、、\r
 337                                                                         this[ '_rawObject' ].src = '';\r
 338                                                                         //this[ '_rawObject' ].load();                                          \r
 339                                                 };\r
 340                                                         };\r
 341                                                         \r
 342                                                 };\r
 343                                                 break;\r
 344                                         \r
 345                                 };\r
 346                                 \r
 347                                 \r
 348                                 if( !this._loaded && ( loaded || e.type === X_Audio_HTMLAudio_playTrigger || e.type === 'loadeddata' ) ){\r
 349                                         this.autoplay && X_Timer_once( 16, this, this.play );\r
 350                                         this._loaded = true;\r
 351                                         this.proxy[ 'dispatch' ]( X_EVENT_READY );\r
 352                                         console.log( 'Loaded! ' + e.type + ' d:' + ( this.duration | 0 ) );\r
 353                                         return;\r
 354                                 };\r
 355                                 \r
 356                                 loaded || ( type && this.proxy[ 'dispatch' ]( type ) );\r
 357                         },\r
 358                         \r
 359                         close : function(){\r
 360                                 // 【javascript】モバイル向けブラウザでも音を鳴らしたい【WebAudio】\r
 361                                 // http://ingaouhou.com/archives/3633\r
 362                                 // ・使い終わったインスタンスはload()しておくとやや安定\r
 363                                 this.playing && this.pause();\r
 364                                 delete this._closed;\r
 365                                 delete this._loaded;\r
 366                                 \r
 367                                 this[ '_rawObject' ].src = '';\r
 368                                 this[ '_rawObject' ].load();\r
 369                         },\r
 370                         \r
 371                         play : function(){\r
 372                                 var begin, end;\r
 373                                 \r
 374                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 375                                 if( this._closed ) return;\r
 376                                 if( !this._loaded /* && !X_Audio_Sprite_inTouchAction */ ){\r
 377                         this.autoplay = true;\r
 378                         return;\r
 379                                 };\r
 380 \r
 381                                 if( X_Audio_HTMLAudioWrapper_ieMobile9Fix && this._playForDuration === 0 ){\r
 382                                         console.log( 'DurationFix開始 - ' + this[ '_rawObject' ].duration );\r
 383                                         this._playForDuration = 1;\r
 384                                 };\r
 385 \r
 386                                 end   = X_AudioWrapper_getEndTime( this );\r
 387                                 begin = this._beginTime = X_AudioWrapper_getStartTime( this, end, true );\r
 388 \r
 389                     if( X_Audio_HTMLAudioWrapper_shortPlayFix ){\r
 390                         begin -= end - begin > 1000 ? 200 : 400;\r
 391                         begin  = begin < 0 ? 0 : begin;\r
 392                     };\r
 393 \r
 394                                 if( !this[ '_rawObject' ].src ){\r
 395                                         this._beginTime = begin;\r
 396                                         this[ '_rawObject' ].src = this._src;\r
 397                                         delete this._playForDuration;\r
 398                                 };\r
 399 \r
 400                             \r
 401                             if( !this.playing ){\r
 402                                     if( X_UA[ 'Chrome' ] ){ // [CHROME][FIX] volume TODO どの version で 修正される？\r
 403                                         // [!] delay\r
 404                                         X_Timer_once( 0, this, this._fixForChrome );\r
 405                                         this[ '_rawObject' ].volume = 0;\r
 406                                     } else {\r
 407                                         this[ '_rawObject' ].volume = this.volume;\r
 408                                     };\r
 409                                 this[ '_rawObject' ].play();\r
 410                                 this.playing = true;\r
 411                             };\r
 412                                 //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
 413                                 //Firefox3.6では一度も play() していない状態で currentTime = 0 を実行するとエラーになる。\r
 414                                 //また、GoogleChrome7 では currentTime = 0 直後に play() すると、pause()した位置前後の音が混ざることがある。(少なくとも自分の環境では)\r
 415                                 this[ '_rawObject' ].currentTime = this._lastCurrentTime = begin / 1000;\r
 416 \r
 417                             console.log( '[HTMLAudio] play ' + begin + ' -> ' + end );\r
 418                     \r
 419                     if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 420                         this._beginTime = begin;\r
 421                         this._playTime  = X_Timer_now();\r
 422                     };\r
 423 \r
 424                         },\r
 425                                 \r
 426                                 // [CHROME][FIX] volume\r
 427                                 _fixForChrome : X_UA[ 'Chrome' ] && function(){\r
 428                                         !this._closed && ( this[ '_rawObject' ].volume = this.volume );\r
 429                                 },\r
 430                         \r
 431                         pause : function(){\r
 432                                 if( !this.playing ) return;\r
 433                                 \r
 434                                 this.seekTime = this.state().currentTime;\r
 435 \r
 436                                 delete this._playTime;\r
 437 \r
 438                         !this[ '_rawObject' ].error && this[ '_rawObject' ].pause();\r
 439                         \r
 440                         if( X_Audio_HTMLAudioWrapper_durationFix ){\r
 441                                 this[ '_rawObject' ].src = '';\r
 442                                 // load();\r
 443                         };\r
 444                         delete this.playing;\r
 445                         },\r
 446         \r
 447                         state : function( obj ){\r
 448                                 var result;\r
 449                                 \r
 450                                 if( obj === undefined ){\r
 451                                     return {\r
 452                                         startTime     : this.startTime,\r
 453                                         endTime       : this.endTime < 0 ? this.duration : this.endTime,\r
 454                                         loopStartTime : this.loopStartTime < 0 ? this.startTime : this.loopStartTime,\r
 455                                         loopEndTime   : this.loopEndTime < 0 ? ( this.endTime || this.duration ) : this.loopEndTime,\r
 456                                         \r
 457                                         loop          : this.loop,\r
 458                                         looped        : this.looped,\r
 459                                         volume        : this.volume,\r
 460                                         playing       : this.playing, // && !this[ '_rawObject' ].error && !this[ '_rawObject' ].paused && !this[ '_rawObject' ].ended,                         \r
 461                                         duration      : this.duration,\r
 462                                         \r
 463                                         currentTime   :\r
 464                                                 this.playing ?\r
 465                                                         ( X_Audio_HTMLAudioWrapper_currentTimeFix ?\r
 466                                                                 X_Timer_now() - this._playTime + this._beginTime :\r
 467                                                                 this[ '_rawObject' ].currentTime * 1000 | 0 ) :\r
 468                                                         this.seekTime,\r
 469                                         /*\r
 470         http://www.w3schools.com/tags/av_prop_error.asp\r
 471         1 = MEDIA_ERR_ABORTED - fetching process aborted by user\r
 472     2 = MEDIA_ERR_NETWORK - error occurred when downloading\r
 473     3 = MEDIA_ERR_DECODE - error occurred when decoding\r
 474     4 = MEDIA_ERR_SRC_NOT_SUPPORTED - audio/video not supported\r
 475     */\r
 476                                         error         : this[ '_rawObject' ].error || 0   // 0, 1 ~ 4 \r
 477                                     };                                  \r
 478                                 };\r
 479                         \r
 480                                 result = X_AudioWrapper_updateStates( this, obj );\r
 481                             \r
 482                                 if( result & 2 ){ // seek\r
 483                         this.play();\r
 484                                 //} else\r
 485                                 //if( result & 1 ){\r
 486                                         //if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 487                                         //      this.play();                                            \r
 488                                         //};\r
 489 \r
 490                                 } else\r
 491                                 if( result & 4 ){\r
 492                        this[ '_rawObject' ].volume = this.volume;\r
 493                                 };\r
 494                             \r
 495                         }\r
 496         \r
 497                 }\r
 498         );\r
 499         \r
 500         X_Audio_BACKENDS.push(\r
 501                 {\r
 502                         backendName : 'HTML Audio',\r
 503                 /*\r
 504                  * HTML5 の audio 要素と video 要素でサポートされているメディアフォーマット\r
 505                  * https://developer.mozilla.org/ja/docs/Web/HTML/Supported_media_formats\r
 506                  * \r
 507                  * 主要ブラウザのHTML5 audioタグで使えるファイル形式の再生対応状況を調べてみた\r
 508                  * http://sothis.blog.so-net.ne.jp/2010-10-27\r
 509                  * ダメ元で仕様に含まれていない SHOUTcast もテストしてみました。\r
 510                  * \r
 511                  * IE9 の HTML5 Audio について\r
 512                  * http://kentablog.cluscore.com/2011/05/ie9-html5-audio.html\r
 513                  * 1.Audioオブジェクトを作ることができないので、Audioタグを使う\r
 514                  * 2.クロスドメインアクセスには、「clientaccesspolicy.xml」か「crossdomain.xml」が必要\r
 515                  * 3.wav が不可\r
 516                  * \r
 517                  * IE9でHTML5 autio タグが無効になる\r
 518                  * http://bbs.wankuma.com/index.cgi?mode=al2&namber=64886&KLOG=109\r
 519                  *  IEのバージョン9.0.8112.16421では、Audioオブジェクトのnewも対応してました。\r
 520                  *  createElement等で動的生成すると、よろしくない\r
 521                  * \r
 522                  * media-can-play-wav-audio.html\r
 523                  * https://github.com/adobe/webkit/blob/master/LayoutTests/media/media-can-play-wav-audio.html\r
 524                  * testExpected("audio.canPlayType('audio/wav; codecs=1')", "probably");\r
 525                  * \r
 526                  * HTML5 audioタグ ブラウザ間の違い\r
 527                  * http://wiki.bit-hive.com/tomizoo/pg/HTML5%20audio%A5%BF%A5%B0%20%A5%D6%A5%E9%A5%A6%A5%B6%B4%D6%A4%CE%B0%E3%A4%A4\r
 528                  *  - volume, muted iPhone(iOS4-6)、Android(2.3.6)では動作せず。\r
 529                  *  - FireFox3.6, Android 2.3.6については、src変更後、load()を呼び出さないと切り替わらなかった。iPhoneはload()が不要。\r
 530                  */     \r
 531                         detect : function( proxy, source, ext ){\r
 532                                 /*\r
 533                                 var ok, mineType = 'audio/' + ext;\r
 534                                 switch( ext ){\r
 535                                         case 'mp3' :\r
 536                                                 ok = X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  );\r
 537                                                 mineType = 'audio/mpeg';\r
 538                                                 //if( X_UA[ 'Android' ] && X_UA[ 'Gecko' ] ) mineType = '';\r
 539                                                 break;\r
 540                                         case 'ogg' :\r
 541                                                 ok = 15 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ;\r
 542                                                 if( X_UA[ 'AndroidBrowser' ] ) mineType = '';\r
 543                                                 break;\r
 544                                         case 'm4a' :\r
 545                                                 ok = X_UA[ 'IE' ] || X_UA[ 'WebKit' ];\r
 546                                                 mineType = 'audio/mp4';\r
 547                                                 break;\r
 548                                         case 'webm' :\r
 549                                                 ok = 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] ; // firefox4+(Gecko2+)\r
 550                                                 break;\r
 551                                         case 'wav' :\r
 552                                                 ok = X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  );\r
 553                                                 //mineType = 'audio/wav'; // audio/x-wav ?\r
 554                                                 break;\r
 555                                         default :\r
 556                                                 mineType = '';\r
 557                                 };\r
 558                                 \r
 559                                 if( !ok && mineType ){\r
 560                                         if( !X_Audio_rawAudio ) X_Audio_rawAudio = new Audio;\r
 561                                         ok = X_Audio_rawAudio.canPlayType( mineType );\r
 562                                         //console.log( 'HTML Audio ' + ok + ' ext:' + ext );\r
 563                                 };\r
 564                                 console.log( 'HTML Audio ' + ok + ' ext:' + ext );\r
 565                                 */\r
 566                                 \r
 567                                 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );\r
 568                         },\r
 569                         \r
 570                         klass : X_Audio_HTMLAudioWrapper\r
 571                         \r
 572                 } );\r
 573 \r
 574 /*\r
 575  * \r
 576  * howler.js\r
 577  *     codecs = {\r
 578       mp3: !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, ''),\r
 579       opus: !!audioTest.canPlayType('audio/ogg; codecs="opus"').replace(/^no$/, ''),\r
 580       ogg: !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, ''),\r
 581       wav: !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, ''),\r
 582       aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),\r
 583       m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 584       mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 585       weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '')\r
 586     };\r
 587  */\r
 588         \r
 589 };\r
 590 \r
 591 \r
 592 \r
 593 \r
 594 \r